The legendary Saraswati river which flowed southwest from the Himalayas roughly parallel to the Indus River during the Ice Age ceased to flow when the Ice Age ended, mostly because its two main tributaries, the Sutlej and Yamuna rivers, were diverted by tectonic upheaval, now flowing respectively into the Indus and Ganges rivers. Not only did the Saraswati cease to be the biggest river in the region, the land of its drainage turned to desert, because the dense cloud cover of the Ice Age was much dissipated for the “bronze age collapse.”